A list of which properties to display for the show command (in order from first to last).

If called with 'verbose' as a true value,
will return all the declared props of a ticket rather than the predefined list of ones to show.
(Should not be called this way during a ticket create as new tickets have no declared properties.)

If called with 'update' as a true value,
props in the prop ordering setting will still be returned in the list even if the record doesn't have that property.
(Because we often want to not show blank properties,
but still have the option of adding them in an update.)